Valve.



J. W. ABBOTT.

' VALVE. APPLICATION FILED JUNE 19 1912.

Patented Sept/30,1913.

E f I \a- I UNITED STATES PATENT orur on.

JAMES W. ABBOTT, OF INGALLS, KANSAS.

VALVE.

Specification of Letters Patent.

Application filed June 19-,

Patented Sept.'30, 1913.

1912. Serial No. 704,605.

To all whom, it may concern:

Be it known that I, JAMES W. ABBOTT,- a citizen of the United States, residing at Ingalls, in the county of Gray, State of Kansas, have invented certain new and useful Improvements in Valves; and I do hereby declare the following to be a full, clear;

locomotives, although I wish it to be undestood that it is not limited in its useful application to this specific purpose.

In carrying out my invention, I am to provide a valve which will embody the desiredfeatures of simplicity, efficiency and reliability.

The further object of my invention is to provide a valve of the oscillating type having, the inlet and exhaust port arranged 1n such manner that the liability of the leakage of steam is avoided. j

I also aim to provide a valvein which the friction and'wear is reduced to a minimum and in which the liability of the valve be coming displaced or deranged is obviated.

I also aim to provide a valve which will work easily and smoothly under any pressure and which may be set from the outside of the engine.

With the'above recited objects and others of a similar nature in view, my invention consists in the construction, combination and arrangement of parts set forth in andfalling within the scope of the appended claims.

In the accompanying drawing like charactors of reference indicate like parts in' all the views, and Figure 1 is a view in side-elevation of a steam cylinder and chest provided with my invention. Fig. 2 is a horizontal longitudinal sectional view. Fig. 3 is a transverse vertical sectional view. Fig. 4.- is a detail perspective view of the valve and the connections for oscillating the-same. 50 Referring now to the accom anying draw- 3and4designate the exhaust orts or channels leading from the cylin er and communicating with the common exhaust passage 5 through the medium of the slotted port 6. It will be seen that the inlet and outlet ports 1 and 3 and 2 and 4, respectively, merge at the points 7 and 8 adjacent to the cylinder, so that common passages 9 and 10 leading to the cylinder are formed.

The valve is indicated as an entirety by the letter V and is in the nature of a cylindrical member extending lengthwise of the steam chestand adapted to be partially rotated or oscillated in the manner hereafter described. This valve is provided adjacent its ends with the inlet ports 11 and 12 respectively, said ports being out of horizontal alinement or angularly arranged relative to each other. Likewise, I provide intermediate the two inlet ports the outlet ports 13 and 14 which are also angularly arranged out of horizontal alinemcnt, these latter ports-being angular in construction, instead of extending directly through the valve so that they are brought alternately into reg istration withythe slotted port- 6 leading to the common exhaust passage, for the purpose of exhausting the charge. The cylindrical' valve body is further provided with a series of circumferential grooves 15' in which are loosely seated packing rings 16 which bind against the adjacent walls of the steam chest or valve casing, that is to Stay the portion indicated by B, which forms a valve casing so that as the valve itself oscillates therings are frictionally held stationary by binding against the walls and 1 thereby provide a steam tight oint.

The stem of the valve is shown at 17 and has rigidly connected thereto the arm 18, one end of which is connected to the yoke 19 of the universal'joint 20', said joint being connected at the yoke 21 with the bell-crank arm 22.

. Mounted at its heel portion upon the pivot 23 is the arm 24 of the bell-crank carrying a sliding collar 25 which in turn is connected at 26 to the rod 27 forming a part of the eccentric rod 28, a turn-buckle 29 adjustably connecting the rod section 27 with the portion 30 of the eccentric. By such an arrangement, it will be seen that as the crank or eccentric is operated, a partial turning or oscillation will be imparted to the cylindrical valve so that the inlet ports will be alternately brought into alinement with the ports leading to the steam; chest to admit steam to the latter, -and the outlet ports be made without departing from the spirit of the invention or exceeding the scope of the appended claims.

What I claim is:'

1. The combination of a cylinder having a piston moving therein and a steam chest provided with and communicating with a valve casing, there being end inlet ports and intermediate exhaust ports formlng communication between the valve casing and the cylinder, the exhaust ports communicating with a common exhaust passage, a cylindrical valve within the casing and having inlet ports adjacent its ends, one of said ports ed on the valves and held stationary by frictional engagement with the walls of the valve casing, and mechanism for oscillating the valve to bring the inlet and exhaust ports thereof into communication with the inlet and exhaust ports of the cylinder at predetermined times.

In testimony whereof, I afiix my signature, in presence of two witnesses.

JAMES W. ABBOTT. i

Witnesses O. F. THOMAS, JOHN GARETT. 

